shell structurebivalvemorphological typeorganic matrixamino acidphylogenyMore than 10 morphological types of shell structure such as the simple prismatic, nacreous, foliated, composite prismatic, crossed lamellar structures and the others are discriminated in bivalve shells. The combination of these ...
Bivalve, (class Bivalvia), any of more than 15,000 species of clams, oysters, mussels, scallops, and other members of the phylum Mollusca characterized by a shell that is divided from front to back into left and right valves. The valves are connected to
Journal of Natural History Series 3Gray, J. É, 1858a [1 July], On the structure of Humphreyia, an anomalous bivalve shell, hitherto confounded with Aspergillum . Annals and Magazine of Natural History, Ser. 3, 2(7): 16 – 20 ....
Clam, in general, any member of the invertebrate class Bivalvia—mollusks with a bivalved shell (i.e., one with two separate sections). More than 15,000 living species of bivalves are known, of which about 500 live in fresh water; the others occur in all
贝类双壳类(Mollusk Shell Bivalve) 双壳贝类(Bivalve Cockle Mollusk) 贝类双壳核桃(Mollusk Bivalve Walnut) 双壳贝类(Cockle Bivalve Mollusk) 双壳贝类(Bivalve Mollusk Cockle) 双壳贝类(Bivalve Cockle Mollusk) 双壳贝类(Cockle Bivalve Mollusk) 双壳贝类(Mollusk Bivalve Cockle) ...
17.A similar structure or part, such as one that enables the valves of a bivalve mollusk to open and close.类似铰链的装置类似的结构或部分,如使双壳类软体动物的壳张开闭合的关节 18.edible marine bivalve having a fluted fan-shaped shell that swim by expelling water from the shell in a series...
(1.8 and 1.5 wt%), and the composition of the shell macromolecules is variable between the two calcareous biominerals. This work shows for the first time the presence of polysaccharide-based compounds that could be essential for the construction of bio-organics as well as many prominent protein...
Structure of the nacreous organic matrix of a bivalve mollusk shell examined in the hydrated state using Cryo-TEM J. Struct. Biol. (2001) F. Marin et al. Molluscan shell proteins C.R. Palevol (2004) S. Weiner et al. X-ray diffraction study of the insoluble organic matrix of mollusk s...
Shells of the bivalve Arctica islandica are used to reconstruct paleo-environmental conditions (e.g. temperature) via biogeochemical proxies, i.e. biogenic components that are related closely to environmental parameters at the time of shell formation. Se
7. There is a case of an oysterlikebivalvethat evolved a more and more spiraled shell until, just before extinction, the valves could barely open. 这里有个例子,一种牡蛎状双壳贝,进化出越来越趋螺旋状的外壳,直到该物种灭绝前,其外壳已经几乎打不开了。